Prostaglandin E synthase

Prostaglandin E synthase (or PGE synthase) is an enzyme involved in eicosanoid and glutathione metabolism, a member of MAPEG family. It generates prostaglandin E (PGE) from prostaglandin H2.^[2]^[3]

The synthase generating PGE2 is a membrane-associated protein.

Biosynthesis of eicosanoids.

Isozymes

Humans express three prostaglandin-E synthase isozymes, each encoded by a separate gene:

prostaglandin E synthase (microsomal)
Identifiers
Symbol	PTGES
Alt. symbols	MGST1L1
Entrez	9536
HUGO	9599
OMIM	605172
RefSeq	NM_004878
UniProt	O14684
Other data
Locus	Chr. 9 q34.3

prostaglandin E synthase 2 (microsomal)
Identifiers
Symbol	PTGES2
Alt. symbols	C9orf15
Entrez	80142
HUGO	17822
OMIM	608152
RefSeq	NM_198939
UniProt	Q9H7Z7
Other data
Locus	Chr. 9 q34.12

prostaglandin E synthase 3 (cytosolic)
Identifiers
Symbol	PTGES3
Alt. symbols	p23, TEBP, cPGES
Entrez	10728
HUGO	16049
OMIM	607061
RefSeq	NM_006601
UniProt	Q15185
Other data
Locus	Chr. 12 q13.13

References

↑ Jegerschold, C.; Pawelzik, S. -C.; Purhonen, P.; Bhakat, P.; Gheorghe, K. R.; Gyobu, N.; Mitsuoka, K.; Morgenstern, R.; Jakobsson, P. -J.; Hebert, H. (2008). "Structural basis for induced formation of the inflammatory mediator prostaglandin E2". Proceedings of the National Academy of Sciences. 105 (32): 11110–11115. doi:10.1073/pnas.0802894105. PMC 2516235. PMID 18682561.
↑ Murakami M, Nakatani Y, Tanioka T, Kudo I (August 2002). "Prostaglandin E synthase". Prostaglandins Other Lipid Mediat. 68-69: 383–99. doi:10.1016/S0090-6980(02)00043-6. PMID 12432931.
↑ Park JY, Pillinger MH, Abramson SB (June 2006). "Prostaglandin E2 synthesis and secretion: the role of PGE2 synthases". Clin. Immunol. 119 (3): 229–40. doi:10.1016/j.clim.2006.01.016. PMID 16540375.

External links

prostaglandin-E synthase at the US National Library of Medicine Medical Subject Headings (MeSH)
EC 5.3.99.3

Metabolism: lipid metabolism - eicosanoid metabolism enzymes

Precursor	Phospholipase A2 Phospholipase C Diacylglycerol lipase

Prostanoids	Cyclooxygenase PTGS1 PTGS2 PGD2 synthase PGE synthase Prostaglandin-E2 9-reductase PGI2 synthase TXA synthase

Leukotrienes	5-Lipoxygenase activating protein/Arachidonate 5-lipoxygenase LTA4 hydrolase (B4 synthesis) LTC4 synthase Gamma-glutamyl transpeptidase LTD4 hydrolase

Ungrouped	HPGD

Prostanoid signaling modulators

Receptor
(ligands)

DP (D₂)

DP₁	Agonists: Prostaglandin D₂ Treprostinil Antagonists: Asapiprant Laropiprant Vidupiprant

DP₂	Agonists: Indometacin Prostaglandin D₂ Antagonists: ADC-3680 AZD-1981 Bay U3405 Fevipiprant MK-1029 MK-7246 OC-459 OC000459 QAV-680 Ramatroban Setipiprant TM30089 Vidupiprant

EP (E₂)

EP₁	Agonists: Beraprost Enprostil Iloprost (ciloprost) Latanoprost Lubiprostone Misoprostol Prostaglandin E₁ (alprostadil) Prostaglandin E₂ (dinoprostone) Sulprostone Antagonists: AH-6809 ONO-8130 SC-19220 SC-51089 SC-51322

EP₂	Agonists: Butaprost Misoprostol Prostaglandin E₁ (alprostadil) Prostaglandin E₂ (dinoprostone) Treprostinil Antagonists: AH-6809 PF-04418948 TG 4-155

EP₃	Agonists: Beraprost Carbacyclin Cicaprost Enprostil Iloprost (ciloprost) Isocarbacyclin Latanoprost Misoprostol Prostaglandin D₂ Prostaglandin E₁ (alprostadil) Prostaglandin E₂ (dinoprostone) Remiprostol Sulprostone Antagonists: L-798106

EP₄	Agonists: Lubiprostone Misoprostol Prostaglandin E₁ (alprostadil) Prostaglandin E₂ (dinoprostone) TCS-2510 Antagonists: GW-627368 L-161982 ONO-AE3-208

Unsorted	Agonists: 16,16-Dimethyl Prostaglandin E₂ Aganepag Carboprost Evatanepag Gemeprost Nocloprost Omidenepag Prostaglandin F_2α (dinoprost) Simenepag Taprenepag

FP (F_2α)

IP (I₂)

Agonists: ACT-333679
AFP-07
Beraprost
BMY-45778
Carbacyclin
Cicaprost
Iloprost (ciloprost)
Isocarbacyclin
MRE-269
NS-304
Prostacyclin (prostaglandin I₂, epoprostenol)
Prostaglandin E₁ (alprostadil)
Ralinepag
Selexipag
Taprostene
TRA-418
Treprostinil

Antagonists: RO1138452

TP (TX_A2)

Agonists: Carbocyclic thromboxane A₂
I-BOP
Thromboxane A₂
U-46619
Vapiprost

Antagonists: 12-HETE
13-APA
AA-2414
Argatroban
Bay U3405
BMS-180,291
Daltroban
Domitroban
EP-045
GR-32191
ICI-185282
ICI-192605
Ifetroban
Imitrodast
L-655240
L-670596
Linotroban
Mipitroban
ONO-3708
ONO-11120
Picotamide
Pinane thromboxane A₂
Ramatroban
Ridogrel
S-145
Samixogrel
Seratrodast
SQ-28,668
SQ-29,548
Sulotroban
Terbogrel
Terutroban
TRA-418

Unsorted

Arbaprostil
Ataprost
Ciprostene
Clinprost
Cobiprostone
Delprostenate
Deprostil
Dimoxaprost
Doxaprost
Ecraprost
Eganoprost
Enisoprost
Eptaloprost
Esuberaprost
Etiproston
Fenprostalene
Flunoprost
Froxiprost
Lanproston
Limaprost
Luprostiol
Meteneprost
Mexiprostil
Naxaprostene
Nileprost
Nocloprost
Ornoprostil
Oxoprostol
Penprostene
Pimilprost
Piriprost
Posaraprost
Prostalene
Rioprostil
Rivenprost
Rosaprostol
Spiriprostil
Tiaprost
Tilsuprost
Tiprostanide
Trimoprostil
Viprostol

Enzyme
(inhibitors)

COX (PTGS)	Aceclofenac Acemetacin Acetanilide Alclofenac Alminoprofen Aloxiprin AM404 Amfenac Ampiroxicam Anitrazafen Antrafenine Apricoxib Aspirin (acetylsalicylic acid) Azapropazone Bendazac Benorilate (benorylate) Benoxaprofen Bromfenac Bucetin Bucloxic acid (blucloxate) Bufexamac Bumadizone Butibufen Carbasalate calcium Carprofen Celecoxib Cimicoxib Cinmetacin Clobuzarit Clometacin Clonixeril Clonixin Curcumin Deracoxib Dexibuprofen Dexindoprofen Dexketoprofen Diclofenac Difenpiramide Diflunisal Dipyrocetyl Droxicam DuP-697 Enolicam Ethenzamide Etodolac Etofenamate Etoricoxib Felbinac Fenbufen Fenclofenac Fenoprofen Fentiazac Firocoxib FK-3311 Floctafenic acid (floctafenate) Floctafenine Flosulide Flufenamic acid (flufenamate) Flumizole Flunixin Flunoxaprofen Fluproquazone Flurbiprofen FR-122047 Glafenine Glimepiride Glucametacin Guacetisal Hyperforin Ibuprofen Ibuproxam Indometacin farnesil Indometacin (indomethacin) Indoprofen Isoxicam Itazigrel Ketoprofen Ketorolac L-655240 L-670596 Licofelone Lonazolac Lornoxicam Loxoprofen Lumiracoxib Magnesium salicylate Mavacoxib Meclofenamic acid (meclofenamate) Mefenamic acid (mefenamate) Meloxicam Menatetrenone (vitamin K₂) Mesalazine (5-aminosalicylic acid) Methyl salicylate Miroprofen Mofezolac Morniflumate Nabumetone Naproxcinod Naproxen NCX-466 NCX-4040 Niflumic acid (niflumate) Nimesulide NS-398 Oxametacin Oxaprozin Oxindanac Pamicogrel Paracetamol (acetaminophen) Parapropamol Parecoxib Phenacetin Piroxicam Pirprofen Polmacoxib Pranoprofen Proglumetacin Propacetamol Resveratrol Robenacoxib Rofecoxib Romazarit Rutecarpine Salacetamide Salicin Salicylamide Salicylic acid (salicylate) Salsalate Satigrel SC-236 SC-560 SC-58125 Sodium salicylate Sulindac Sulindac sulfide Suprofen Talinflumic acid (talinflumate) Tarenflurbil Tenidap Tenoxicam Tepoxalin Tiaprofenic acid (tiaprofenate) Tiflamizole Tilmacoxib Timegadine Tolfenamic acid (tolfenamate) Tolmetin Trifenagrel Triflusal Tropesin Valdecoxib Vedaprofen Zidometacin Zomepirac

PGD₂ synthase	Retinoids Selenium (selenium tetrachloride, sodium selenite, selenium disulfide)

PGE synthase	HQL-79

PGF synthase	Bimatoprost

PGI₂ synthase	Tranylcypromine

TXA synthase	Camonagrel Dazmegrel Dazoxiben Furegrelate Isbogrel Midazogrel Nafagrel Nicogrelate Ozagrel Picotamide Pirmagrel Ridogrel Rolafagrel Samixogrel Terbogrel U63557A

Others

See also: Leukotrienergics

Isomerases: intramolecular oxidoreductases (EC 5.3)

5.3.1: Aldoses/Ketoses	Triosephosphate isomerase Ribose-5-phosphate isomerase Mannose phosphate isomerase Glucose isomerase

5.3.2: Keto/Enol	Phenylpyruvate tautomerase Oxaloacetate tautomerase

5.3.3: C = C	Steroid D-isomerase Isopentenyl-diphosphate delta isomerase Vinylacetyl-CoA D-isomerase Muconolactone D-isomerase Cholestenol Delta-isomerase (EBP) Methylitaconate D-isomerase Aconitate Delta-isomerase Enoyl CoA isomerase Prostaglandin-A1 Delta-isomerase 5-carboxymethyl-2-hydroxymuconate D-isomerase Isopiperitenone D-isomerase L-dopachrome isomerase Polyenoic fatty acid isomerase

5.3.4: S-S	Protein disulfide-isomerase (PDIA3)

5.3.99: other	Prostaglandin D2 synthase/Prostaglandin-D synthase Prostaglandin E synthase Prostacyclin synthase Thromboxane-A synthase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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